Stepping to my man

highschool girls are flirting with my 20 year old boyfriend. Not just once, but walk up to him while he is reading a book, ask to follow him on Instagram, tell him "Now you have a reason to use Instagram" and message him on IG. Then show up to his work the next day, and ask him when he gets off. And he has told her that he has a girlfriend, and he said he doesnt want to be rude to her. I know she's young and stupid, but should I say something?

"Ill tie your kicks together if I ever see you step to him"

just kidding. I stole that one from Danny Brown.